Logkeys is a linux keylogger (GNU/Linux systems only). It is no more advanced than other available linux keyloggers, but is a bit more up to date, it doesn't unreliably repeat keys and it should never crash your X. All in all, it just seems to work. It relies on event interface of the Linux input subsystem. Once set, it logs all common character and function keys, while also being fully aware of Shift and AltGr key modifiers. It works with serial as well as USB keyboards.

logkeys Linux keylogger works with serial as well as USB keyboards or similar "HID" devices. However, due to a certain bug, a workaround is necessary on some setups.

logkeys supports keyboards like on the image below . These are standard 101 to 105-key PC keyboards with no Asian extensions.